1 files changed, 237 insertions, 0 deletions
diff --git a/school/node_modules/node-forge/js/random.js b/school/node_modules/node-forge/js/random.js
new file mode 100644
index 0000000..febc1fd
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+++ b/school/node_modules/node-forge/js/random.js
@@ -0,0 +1,237 @@
+/**
+ * An API for getting cryptographically-secure random bytes. The bytes are
+ * generated using the Fortuna algorithm devised by Bruce Schneier and
+ * Niels Ferguson.
+ *
+ * Getting strong random bytes is not yet easy to do in javascript. The only
+ * truish random entropy that can be collected is from the mouse, keyboard, or
+ * from timing with respect to page loads, etc. This generator makes a poor
+ * attempt at providing random bytes when those sources haven't yet provided
+ * enough entropy to initially seed or to reseed the PRNG.
+ *
+ * @author Dave Longley
+ *
+ * Copyright (c) 2009-2014 Digital Bazaar, Inc.
+ */
+(function() {
+/* ########## Begin module implementation ########## */
+function initModule(forge) {
+
+// forge.random already defined
+if(forge.random && forge.random.getBytes) {
+  return;
+}
+
+(function(jQuery) {
+
+// the default prng plugin, uses AES-128
+var prng_aes = {};
+var _prng_aes_output = new Array(4);
+var _prng_aes_buffer = forge.util.createBuffer();
+prng_aes.formatKey = function(key) {
+  // convert the key into 32-bit integers
+  var tmp = forge.util.createBuffer(key);
+  key = new Array(4);
+  key[0] = tmp.getInt32();
+  key[1] = tmp.getInt32();
+  key[2] = tmp.getInt32();
+  key[3] = tmp.getInt32();
+
+  // return the expanded key
+  return forge.aes._expandKey(key, false);
+};
+prng_aes.formatSeed = function(seed) {
+  // convert seed into 32-bit integers
+  var tmp = forge.util.createBuffer(seed);
+  seed = new Array(4);
+  seed[0] = tmp.getInt32();
+  seed[1] = tmp.getInt32();
+  seed[2] = tmp.getInt32();
+  seed[3] = tmp.getInt32();
+  return seed;
+};
+prng_aes.cipher = function(key, seed) {
+  forge.aes._updateBlock(key, seed, _prng_aes_output, false);
+  _prng_aes_buffer.putInt32(_prng_aes_output[0]);
+  _prng_aes_buffer.putInt32(_prng_aes_output[1]);
+  _prng_aes_buffer.putInt32(_prng_aes_output[2]);
+  _prng_aes_buffer.putInt32(_prng_aes_output[3]);
+  return _prng_aes_buffer.getBytes();
+};
+prng_aes.increment = function(seed) {
+  // FIXME: do we care about carry or signed issues?
+  ++seed[3];
+  return seed;
+};
+prng_aes.md = forge.md.sha256;
+
+/**
+ * Creates a new PRNG.
+ */
+function spawnPrng() {
+  var ctx = forge.prng.create(prng_aes);
+
+  /**
+   * Gets random bytes. If a native secure crypto API is unavailable, this
+   * method tries to make the bytes more unpredictable by drawing from data that
+   * can be collected from the user of the browser, eg: mouse movement.
+   *
+   * If a callback is given, this method will be called asynchronously.
+   *
+   * @param count the number of random bytes to get.
+   * @param [callback(err, bytes)] called once the operation completes.
+   *
+   * @return the random bytes in a string.
+   */
+  ctx.getBytes = function(count, callback) {
+    return ctx.generate(count, callback);
+  };
+
+  /**
+   * Gets random bytes asynchronously. If a native secure crypto API is
+   * unavailable, this method tries to make the bytes more unpredictable by
+   * drawing from data that can be collected from the user of the browser,
+   * eg: mouse movement.
+   *
+   * @param count the number of random bytes to get.
+   *
+   * @return the random bytes in a string.
+   */
+  ctx.getBytesSync = function(count) {
+    return ctx.generate(count);
+  };
+
+  return ctx;
+}
+
+// create default prng context
+var _ctx = spawnPrng();
+
+// add other sources of entropy only if window.crypto.getRandomValues is not
+// available -- otherwise this source will be automatically used by the prng
+var _nodejs = (
+  typeof process !== 'undefined' && process.versions && process.versions.node);
+var getRandomValues = null;
+if(typeof window !== 'undefined') {
+  var _crypto = window.crypto || window.msCrypto;
+  if(_crypto && _crypto.getRandomValues) {
+    getRandomValues = function(arr) {
+      return _crypto.getRandomValues(arr);
+    };
+  }
+}
+if(forge.disableNativeCode || (!_nodejs && !getRandomValues)) {
+  // if this is a web worker, do not use weak entropy, instead register to
+  // receive strong entropy asynchronously from the main thread
+  if(typeof window === 'undefined' || window.document === undefined) {
+    // FIXME:
+  }
+
+  // get load time entropy
+  _ctx.collectInt(+new Date(), 32);
+
+  // add some entropy from navigator object
+  if(typeof(navigator) !== 'undefined') {
+    var _navBytes = '';
+    for(var key in navigator) {
+      try {
+        if(typeof(navigator[key]) == 'string') {
+          _navBytes += navigator[key];
+        }
+      } catch(e) {
+        /* Some navigator keys might not be accessible, e.g. the geolocation
+          attribute throws an exception if touched in Mozilla chrome://
+          context.
+
+          Silently ignore this and just don't use this as a source of
+          entropy. */
+      }
+    }
+    _ctx.collect(_navBytes);
+    _navBytes = null;
+  }
+
+  // add mouse and keyboard collectors if jquery is available
+  if(jQuery) {
+    // set up mouse entropy capture
+    jQuery().mousemove(function(e) {
+      // add mouse coords
+      _ctx.collectInt(e.clientX, 16);
+      _ctx.collectInt(e.clientY, 16);
+    });
+
+    // set up keyboard entropy capture
+    jQuery().keypress(function(e) {
+      _ctx.collectInt(e.charCode, 8);
+    });
+  }
+}
+
+/* Random API */
+if(!forge.random) {
+  forge.random = _ctx;
+} else {
+  // extend forge.random with _ctx
+  for(var key in _ctx) {
+    forge.random[key] = _ctx[key];
+  }
+}
+
+// expose spawn PRNG
+forge.random.createInstance = spawnPrng;
+
+})(typeof(jQuery) !== 'undefined' ? jQuery : null);
+
+} // end module implementation
+
+/* ########## Begin module wrapper ########## */
+var name = 'random';
+if(typeof define !== 'function') {
+  // NodeJS -> AMD
+  if(typeof module === 'object' && module.exports) {
+    var nodeJS = true;
+    define = function(ids, factory) {
+      factory(require, module);
+    };
+  } else {
+    // <script>
+    if(typeof forge === 'undefined') {
+      forge = {};
+    }
+    return initModule(forge);
+  }
+}
+// AMD
+var deps;
+var defineFunc = function(require, module) {
+  module.exports = function(forge) {
+    var mods = deps.map(function(dep) {
+      return require(dep);
+    }).concat(initModule);
+    // handle circular dependencies
+    forge = forge || {};
+    forge.defined = forge.defined || {};
+    if(forge.defined[name]) {
+      return forge[name];
+    }
+    forge.defined[name] = true;
+    for(var i = 0; i < mods.length; ++i) {
+      mods[i](forge);
+    }
+    return forge[name];
+  };
+};
+var tmpDefine = define;
+define = function(ids, factory) {
+  deps = (typeof ids === 'string') ? factory.slice(2) : ids.slice(2);
+  if(nodeJS) {
+    delete define;
+    return tmpDefine.apply(null, Array.prototype.slice.call(arguments, 0));
+  }
+  define = tmpDefine;
+  return define.apply(null, Array.prototype.slice.call(arguments, 0));
+};
+define(['require', 'module', './aes', './md', './prng', './util'], function() {
+  defineFunc.apply(null, Array.prototype.slice.call(arguments, 0));
+});
+})();